This is false. This is again a tricky question and one should be careful when answering this type of question. It is the cloud customer is who is ultimately responsible for the ownership of risk in the cloud environment. Consumer just passes some of risk management responsibilities to the cloud service provider.

The management plane is a key tool for enabling and enforcing separation and isolation in multitenancy.
Limiting who can do what with the APIs is one important means for segregating out customers, or different users within a single tenant. Resources are in the pool, out of the pool, and where they are allocated Reference: CSA Security Guidelines V.4(reproduced here for the educational purpose)

Corporate governance is the system of rules, practices and processes by which a company is directed and controlled. Corporate governance, essentially involves balancing the interests of a company's many stakeholders, such as shareholders, management, customers, suppliers, financiers, government and the community.

Authorization is the process of granting of right to access to a user, program or process. It should not be confused with Authentication.

Network, CPU and Disk(storage) are key subsystems in cloud environment that should be monitored.